package com.atguigu.crowd.service.impl;


import com.atguigu.crowd.constant.CrowdConstant;
import com.atguigu.crowd.entity.Admin;
import com.atguigu.crowd.entity.AdminExample;
import com.atguigu.crowd.exception.LoginAcctAlreadyInUseException;
import com.atguigu.crowd.exception.LoginAcctAlreadyInUseForUpdateException;
import com.atguigu.crowd.exception.LoginFailedException;
import com.atguigu.crowd.mapper.AdminMapper;
import com.atguigu.crowd.mvc.handler.TestHandler;
import com.atguigu.crowd.service.api.AdminService;
import com.atguigu.crowd.util.CrowdUtil;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import lombok.extern.slf4j.Slf4j;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DuplicateKeyException;
import org.springframework.stereotype.Service;
import sun.rmi.server.LoaderHandler;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.List;
import java.util.Objects;
@Slf4j
@Service
public class AdminServiceImpl implements AdminService {
    @Autowired
    private AdminMapper adminMapper ;
    private Logger logger = LoggerFactory.getLogger(TestHandler.class);
    @Override
    public void saveAdmin(Admin admin) {
        String userPswd = admin.getUserPswd();
        userPswd = CrowdUtil.md5(userPswd);
        admin.setUserPswd(userPswd);
        Date date = new Date() ;
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String createTime = format.format(date);
        admin.setCreateTime(createTime);
        try {
            adminMapper.insert(admin);
        }catch (Exception e){
            e.printStackTrace();
            logger.info("异常全类名"+e.getClass().getName());
            if(e instanceof DuplicateKeyException){
                throw new LoginAcctAlreadyInUseException(CrowdConstant.MESSAGE_LOGIN_ACCT_ALREADY_IN_USE);
            }
        }
       // throw new RuntimeException() ;
    }

    @Override
    public List<Admin> getAll() {
        return adminMapper.selectByExample(new AdminExample());
    }

    @Override
    public Admin getAdminByLoginAcct(String loginAcct, String userPswd) {
        // 1.根据登录账号查询Admin对象
        // ①创建AdminExample对象
        AdminExample adminExample = new AdminExample();
//        ②创建Criteria对象
        AdminExample.Criteria criteria = adminExample.createCriteria();
//        ③在Criteria对象中封装查询条件
        criteria.andLoginAcctEqualTo(loginAcct) ;
        if(criteria.andLoginAcctEqualTo(loginAcct) == null){
            throw new LoginFailedException(CrowdConstant.MESSAGE_STRING_INVALIDATE);
        }
//        ④调用AdminMapper的方法执行查询
        List<Admin> list = adminMapper.selectByExample(adminExample);
        // 2.判断Admin对象是否为null
        if(list == null || list.size() == 0){
            throw new LoginFailedException(CrowdConstant.MESSAGE_LOGIN_FAILED);
        }
        if(list.size() >1){
            throw new RuntimeException(CrowdConstant.MESSAGE_SYSTEM_ERROE_LOGIN_NOT_UNIQUE) ;
        }
        Admin admin = list.get(0);

        // 3.如果admin对象为null则抛出异常
        if(admin == null){
            throw new LoginFailedException(CrowdConstant.MESSAGE_LOGIN_FAILED);
        }
        // 4.如果admin对象不为null则将数据库密码从Admin对象中取出
        String userPswdDB = admin.getUserPswd();
        // 5.将表单提交的明文密码进行加密
        String userPswForm = CrowdUtil.md5(userPswd);
        // 6.对密码进行比较
        if(!Objects.equals(userPswForm,userPswdDB)){
            // 7.如果比较结果不一致则抛出异常
            throw new LoginFailedException(CrowdConstant.MESSAGE_LOGIN_FAILED);
        }
        // 8.如果一致则返回Admin对象
        return admin ;
    }

    @Override
    public PageInfo<Admin> getPageInfo(String keyword, Integer pageNum, Integer pageSize) {
//        1.调用PageHelper的静态方法开启分页功能
//        这里充分体现了PageHelper的“非侵入式”的设计：原本要做的查询不必有任何修改
        PageHelper.startPage(pageNum,pageSize) ;
//        2.执行查询
        List<Admin> list = adminMapper.selectAdminByKeyword(keyword);
//        3.封装到PageInfo对象中
        return new PageInfo<>(list);
    }

    @Override
    public Boolean deleteAdminByLoginAcct(String loginAcct) {
        AdminExample adminExample = new AdminExample();
//        ②创建Criteria对象
        AdminExample.Criteria criteria = adminExample.createCriteria();
//        ③在Criteria对象中封装查询条件
        criteria.andLoginAcctEqualTo(loginAcct) ;
        int i = adminMapper.deleteByExample(adminExample);
        return i>0;
    }

    @Override
    public void remove(Integer adminId) {
        adminMapper.deleteByPrimaryKey(adminId) ;
    }

    @Override
    public Admin getAdminById(Integer adminId) {
        Admin admin = adminMapper.selectByPrimaryKey(adminId);
        return admin;
    }

    @Override
    public void update(Admin admin) {
        try {
            //表示有选择 的更新对于null不更新
            adminMapper.updateByPrimaryKeySelective(admin) ;
        }catch (Exception e){
            e.printStackTrace();
            logger.info("异常全类名"+e.getClass().getName());
            if(e instanceof DuplicateKeyException){
                throw new LoginAcctAlreadyInUseForUpdateException(CrowdConstant.MESSAGE_LOGIN_ACCT_ALREADY_IN_USE);
            }
        }
    }
    public void batchDelete(List ids){
        adminMapper.batchDelete(ids);
    }
}
